INCLUSIVE CHI-C AND B-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS AT ROOT-S = 1.8 TEV

被引：122

作者：

ABE, F

ALBROW, M

AMIDEI, D

ANWAYWIESE, C

APOLLINARI, G

ATAC, M

AUCHINCLOSS, P

AZZI, P

BACCHETTA, N

BADEN, AR

BADGETT, W

BAILEY, MW

BAMBERGER, A

DEBARBARO, P

BARBAROGALTIERI, A

BARNES, VE

BARNETT, BA

BAUER, G

BAUMANN, T

BEDESCHI, F

BEHRENDS, S

BELFORTE, S

BELLETTINI, G

BELLINGER, J

BENJAMIN, D

BENLLOCH, J

BENSINGER, J

BERETVAS, A

BERGE, JP

BERTOLUCCI, S

BIERY, K

BHADRA, S

BINKLEY, M

BISELLO, D

BLAIR, R

BLOCKER, C

BODEK, A

BOLOGNESI, V

BOOTH, AW

BOSWELL, C

BRANDENBURG, G

BROWN, D

BUCKLEYGEER, E

BUDD, HS

BUSETTO, G

BYONWAGNER, A

BYRUM, KL

CAMPAGNARI, C

CAMPBELL, M

CANER, A

机构：

[1] BRANDEIS UNIV,WALTHAM,MA 02254

[2] UNIV WISCONSIN,MADISON,WI 53706

[3] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[4] TUFTS UNIV,MEDFORD,MA 02155

[5] UNIV CHICAGO,CHICAGO,IL 60637

[6] DUKE UNIV,DURHAM,NC 27706

[7] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[8] IST NAZL FIS NUCL,LAB NAZL FRASCATI,FRASCATI,ITALY

[9] HARVARD UNIV,CAMBRIDGE,MA 02138

[10] UNIV ILLINOIS,URBANA,IL 61801

[11] MCGILL UNIV,INST PARTICLE PHYS,MONTREAL H3A 2T5,QUEBEC,CANADA

[12] UNIV TORONTO,TORONTO M5S 1A1,ONTARIO,CANADA

[13] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[14] KEK,NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[15] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[16] MIT,CAMBRIDGE,MA 02139

[17] UNIV MICHIGAN,ANN ARBOR,MI 48109

[18] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131

[19] UNIV PADUA,IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[20] UNIV PENN,PHILADELPHIA,PA 19104

[21] UNIV PITTSBURGH,PITTSBURGH,PA 15260

[22] UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY

[23] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

[24] PURDUE UNIV,W LAFAYETTE,IN 47907

[25] UNIV ROCHESTER,ROCHESTER,NY 14627

[26] ROCKEFELLER UNIV,NEW YORK,NY 10021

[27] RUTGERS UNIV,PISCATAWAY,NJ 08854

[28] TEXAS A&M UNIV SYST,COLL STN,TX 77843

[29] UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.71.2537

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the full reconstruction of chi(c) mesons through the decay chain chi(c) --> J/psigamma, J/psi --> mu+mu-, using data obtained at the Collider Detector at Fermilab in 2.6 +/- 0.2 pb-1 of ppBAR collisions at square-root s = 1.8 TeV. This exclusive chi(c) sample is used to measure the chi(c)-meson production cross section times branching fractions. We obtain sigma x B = 3.2 +/- 0.4(stat)-1.1(+1.2)(syst) nb for chi(c) mesons decaying to J/psi with p(T) > 6.0 GeV/c and pseudorapidity Absolute value of eta < 0.5. From this and the inclusive J/psi cross section we calculate the inclusive b-quark cross section to be 12.0 +/- 4.5 mub for pT(b) > 8.5 GeV/c and \y(b)\ < 1.

引用

页码：2537 / 2541

页数：5

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